Sorry, but where should I post this question?

This is my first visit, and I am lost. Sorry. But I can't figure out where I should post this question. Some direction appreciated.

In brief, I have a D-Link, DI-704 router. I have Charter Internet Service. I have the 10 Mb program. If I bypass my router and just use my modem, then I can get 10 Meg speeds, but using the router, I drop down to 1 MB down and up load speeds. I know I am probably not providing enough info, but if someone could direct me to where this type of problem is discussed, I'll read up and try to provide info that is more detailed.